ACCUMULATED OTHER COMPREHENSIVE INCOME OR LOSS (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Summary of the changes in accumulated other comprehensive income [Abstract]
Balance at beginning of period	$ (4,375,047)		$ (856,026)		$ (2,806,929)		$ (1,441,378)
Other comprehensive income before reclassification	864,299		590,771		(1,170,076)		973,217
Amounts reclassified from accumulated other comprehensive income	234,050		193,400		700,307		396,306
Net current period other comprehensive income	1,098,349		784,171		(469,769)		1,369,523
Balance at end of period	(3,276,698)		(71,855)		(3,276,698)		(71,855)
Reclassification out of accumulated other comprehensive income [Abstract]
Net gain on securities transactions	0		597		1,228		300,516
Pension and other employee benefits	1,372,179		1,381,401		4,161,178		4,137,878
Income tax expense	1,001,728		1,383,451		3,479,062		4,397,279
Net of tax	2,179,170		2,833,845		7,245,545		8,892,418
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Net of tax	(234,050)		(193,401)		(700,307)		(396,306)
Unrealized Gains and Losses on Securities Available for Sale [Member]
Summary of the changes in accumulated other comprehensive income [Abstract]
Balance at beginning of period	5,987,659		8,184,871		8,022,790		7,987,055
Other comprehensive income before reclassification	864,299		590,771		(1,170,076)		973,217
Amounts reclassified from accumulated other comprehensive income	0		(368)		(756)		(184,998)
Net current period other comprehensive income	864,299		590,403		(1,170,832)		788,219
Balance at end of period	6,851,958		8,775,274		6,851,958		8,775,274
Unrealized Gains and Losses on Securities Available for Sale [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Net gain on securities transactions	0		597		1,228		300,516
Income tax expense	0		230		472		115,518
Net of tax	0		367		756		184,998
Defined Benefit Plans and Other Benefit Plans [Member]
Summary of the changes in accumulated other comprehensive income [Abstract]
Balance at beginning of period	(10,362,706)		(9,040,897)		(10,829,719)		(9,428,433)
Other comprehensive income before reclassification	0		0		0		0
Amounts reclassified from accumulated other comprehensive income	234,050		193,768		701,063		581,304
Net current period other comprehensive income	234,050		193,768		701,063		581,304
Balance at end of period	(10,128,656)		(8,847,129)		(10,128,656)		(8,847,129)
Defined Benefit Plans and Other Benefit Plans [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Income tax expense	145,672		120,994		438,173		362,982
Net of tax	(234,050)		(193,768)		(701,063)		(581,304)
Defined benefit plans and other benefit plans prior service cost [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Pension and other employee benefits	20,786	[1]	20,786	[1]	62,358	[1]	62,358	[1]
Defined Benefit plans and other benefit plans actuarial losses [Member]
Reclassification out of accumulated other comprehensive income [Abstract]
Pension and other employee benefits	$ (400,508)	[1]	$ (335,548)	[1]	$ (1,201,594)	[1]	$ (1,006,644)	[1]

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension and other benefit plan costs (see Note 10 for additional information).